25. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. protected additionally RCD
d. overcurrent protection
b.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19.
22. The Electricity Work Regulations state that:
a. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. IPX7 protection
d. The socket outlet must be:
a. Every caravan pitch must have least one 16A socket outlet for
connection caravan.
24. buried depth 600mm. continuity test
b. only instructed and skilled people may work ‘live’. the industrial type
b. functional test
d.
23. earth fault loop impedance
c.
27. Zone protection.
20. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. All final circuits bathroom, both power and lighting, must have:
a.
26. polarity test. RCD protection
c. one may work ‘live’
c.
. everyone may work ‘live’
b. only competent people may work ‘live’
d. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom. protected from overcurrent
c. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system.
21
